fisheries management and ocean observations dave checkley scripps institution of oceanography...
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![Page 1: Fisheries Management and Ocean Observations Dave Checkley Scripps Institution of Oceanography dcheckley@ucsd.edu](https://reader035.vdocuments.net/reader035/viewer/2022062423/56649e405503460f94b3135a/html5/thumbnails/1.jpg)
Fisheries Management and Ocean Observations
Dave CheckleyScripps Institution of Oceanography
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Acknowledgments
Steven Bograd NOAA Fisheries USANick Caputi CSIRO AustraliaDave Demaster NOAA Fisheries USA Alastair Hobday CSIRO Australia Beth Fulton CSIRO Australia Pierre Fréon IRD FranceRenato Guevara IMARPE PeruAnne Hollowed NOAA Fisheries USABrian MacKenzie Danish Technical University Denmark Lorenzo Motos AZTI SpainFrancisco Neira TAFI AustraliaYoshioki Oozeki NFRI JapanIan Perry Fisheries & Oceans CanadaBill Peterson NOAA Fisheries USABenjamin Planque University of Tromso NorwayJeff Polovina NOAA Fisheries USARyan Rykaczewski GFDL Princeton USASvein Sundby IMR NorwayCarl van der Lingen Marine & Coastal Management South AfricaYoshiro Watanabe ORI JapanGeorge Watters NOAA Fisheries USA
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Main Points
• Ecosystem services, maximum sustainable yield, and rebuilding overexploited stocks are primary goals of fisheries management
• Use of ocean observations in fisheries management is in its infancy
• The next 10 years will see a large increase in the use of ocean observations for fisheries management through the enhancement of sensors, platforms, integrated observing systems, data delivery and use, and models
• Enhanced collaboration among the observing and fisheries communities is essential and should be a goal
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OceanObs’09
Is ocean observing critical to fisheries management in 2009?
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OceanObs’09
Is ocean observing critical to fisheries management in 2009?
No - only in a very few cases
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Fisheries
Removal of fish from the sea by humans
• Fisheries target single species populations – ‘stocks’
• Fishers, not fish, are managed (Ian Perry)
• Climate and fishing together affect fish populations
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World Marine Fisheries ProductionC
aptu
re F
ishe
ries
Aqu
acul
ture
××
×
☐☐☐
(Brander 2007)
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World Marine Fisheries ProductionC
aptu
re F
ishe
ries
Aqu
acul
ture
××
×
☐☐☐
(Brander 2007)
Capture Fisheries
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World Marine Fisheries ProductionC
aptu
re F
ishe
ries
Aqu
acul
ture
××
×
☐☐☐
(Brander 2007)
Aquaculture
Capture Fisheries
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World Fish Landings – Top 10
Peruvian anchoveta 7 007 157 tons
Alaska pollock 2 860 487Skipjack tuna 2 480 812Atlantic herring 2 244 595Blue whiting 2 032 207Chub mackerel 2 030 795Chilean jack mackerel 1, 828 999Japanese anchovy 1, 656 906Largehead hairtail 1 587 786Yellowfin tuna 1 129 415
(FAO)
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Observations of Last Three Days
(JCOMM)
Floats, buoys, and ships – not satellites
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17% of Global Marine Fish Landings
(Stobutski et al. 2006)
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Fisheries Management Objectives
Greatest overall benefit, including ecosystem services
Maximum Sustainable Yield, reduced by other factors
Rebuilding if overfished
(Magnuson-Stevens Reauthorization Act of 2007)
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Management
ObserveModel
Inform GovernIndicators
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Canonical Management
ObserveModel
Inform GovernIndicators
Fishery Dependent Data (e.g., fish size, age, and abundance from landings)
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Ideal Management
ObserveModel
Inform GovernIndicators
Fishery Dependent Data and Ocean Observations
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California Sardine
Varies with climate (PDO) on decadal scale
Prefers warm conditions
1950 2000
Spa
wni
ng S
tock
Bio
mas
s
Recruitm
ent
warm warmcold
(NOAA Fisheries)
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California Sardine
3-year running mean of SIO Pier temperature used to determine fraction of sardine biomass fished
Scripps Pier
Decision Rule
2000 2007
16° 17°C0
10
20
Per
cent
(NOAA Fisheries)
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Turtle By-Catch Reduction
(Duke U)Problem
By-catch of loggerhead sea turtles in the North Pacific longline fishery for swordfish
Solution
Satellite tags and remote sensing define sea turtle habitatSST and altimetry used to map habitat
Weekly advisory product to forecast the zone with the swordfish fishing ground which has the highest probability of interactions between sea turtles and longliners
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Turtle By-Catch Reduction
(Polovina)
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Bluefin Tuna By-Catch Reduction
Analysis and habitat prediction tools
Biological Data(tags)
Habitat Preferences
Physical Data (near-real time distribution of
environment)
Ocean Model (Bluelink)
Habitat Prediction Maps
Management Support(sustainable use) (Hobday, CSIRO)
Objective: Reduce BFT by-catch in tropical tuna longline fishery
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Bluefin Tuna By-Catch Reduction
(Hobday. CSIRO)
Habitat Index Habitat Management Zones
Biweekly: SST & altimetry used with habitat prediction model then management meets to zone the area
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Work backwards…
ObserveModel
Inform GovernIndicators
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Work backwards…
ObserveModel
Inform GovernIndicators
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Governance
Management Options
Catch control
Total catch (race to fish)
Catch shares (rights-based fishing)
Effort control
Time limits
Vessel or gear restrictions
Area (Marine Spatial Management)
Affected by: Natural science, socioeconomics, politics
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Population & Ecosystem Models
Deterministic
Limitation: fish behavior
(“like unmanageable children”…Oozeki-san)
Example: NEMURO
Statistical
Assumes past behavior
Non-linear, short-term
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Indexes
Single number indicating the state of a fish stock, fishery, ecosystem, or environment
Physical: SOI, PDO, NPGO, NPI, NAO, IOD, SIO Pier TempBiological: CPUEMean trophic level (Pauly)Ocean Production Index – fraction released salmon returning to
spawn (Peterson)Indicator (sentinel) species – e.g., predatory seabirds (gannets
diving on sardine) (van der Lingen)Maximum species yield, food-web based yield, species-diversity
based yield (Gifford and Steele)
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Physical Data
Met data (e.g., Tair, wind, BP, humidity)
LightTemperature, salinity, pressureStratification, mixingu, v, wTurbulence (ε)Sea level height
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Chemical Data
O2
pHpCO2
NutrientsChl a
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Biological Data
Phytoplankton and zooplanktonFishBirds, Reptiles, Mammals
Distribution and abundanceMigrationsInteractions (feeding and predation – gut contents)Developmental stages: egg, larva, juvenile, and adultSize spectra
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Socioeconomic Data
CostsMarketsTradingEmploymentEcosystem services
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Integrated Ecosystem Assessment
Formal synthesis and quantitative analysis of information on relevant natural and socioeconomic factors, in relation to specified ecosystem management objectives
Levin et al. 2009
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End-to-End Fishery ModelAtlantis
19 systems
(Beth Fulton, CSIRO)
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New Sensors
AcousticsActive: Multibeam (3D from moving ship) acousticsPassive: marine mammals, anthropogenic
Imaging (Sieracki CWP)Molecular
GeneticsProteomics
Holy Grail: Rapid, accurate, automated species identification and assessment
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Platforms
Satellites SST, SLH, color, winds, salinityShips Station grids (e.g., CalCOFI)
Underway sampling (e.g., CPR, CUFES, MVP, SEASOAR)
VMS – (fishing) vessel monitoring systemsLagrangian floats, gliders, AUVsEulerian moorings (buoys, subsurface profiling winches)Animals tagging (archival, satellite)
bio-logging (Boehme, Costa CWPs)acoustic listening networks (e.g., POST; O’Dor CWP)
CWPs: Handegard, Koslow, Larkin, Malone
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Observing Challenges
• No silver bullet (Beth Fulton)• Timely and open access to data• Sampling of aggregated (patchy) distributions• Time resolution (e.g., spring bloom, spawning, phenology)• Species interactions (feeding, predation)• Relating physics, chemistry, and biology – scale mismatches
- the need for comparable data• Socioeconomics – human dimensions• Risk and uncertainty• Participation: stakeholders, scientists, managers• Coastal observing and capacity building
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The Future
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OceanObs’19 - Predictions
• Yes - ocean observations are critical to fisheries management• Developing, as well as developed, countries use ocean
observations for fisheries management• Climate effects on fisheries will be much more apparent and
ocean observing has contributed to detecting and understanding these, including rising, warming, deoxygenation, and acidification
• Progress on the understanding of the effects of climate and fishing on fish stocks, allowing NFP (Numerical Fisheries Prediction)
CWPs: Feely, Forget (SAFARI)
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Main Points
• Ecosystem services, maximum sustainable yield, and rebuilding overexploited stocks are primary goals of fisheries management
• Use of ocean observations in fisheries management is in its infancy
• The next 10 years will see a large increase in the use of ocean observations for fisheries management through the enhancement of sensors, platforms, integrated observing systems, data delivery and use, and models
• Enhanced collaboration among the observing and fisheries communities is essential and should be a goal